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ntview-do something reasonable if a 4-screen,table2,table3 mirror mode is chosen when the corresponding nametable ram is not available on the cart (instead of crashing)

This commit is contained in:
zeromus 2013-01-01 18:43:23 +00:00
parent 0c69e0fbfb
commit a2c2322e25
1 changed files with 14 additions and 5 deletions
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19
src/drivers/win/ntview.cpp
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@ -169,8 +169,11 @@ void ChangeMirroring(){
case NT_FOUR_SCREEN:
vnapage[0] = &NTARAM[0x000];
vnapage[1] = &NTARAM[0x400];
vnapage[2] = ExtraNTARAM;
vnapage[3] = ExtraNTARAM+0x400;
if(ExtraNTARAM)
{
vnapage[2] = ExtraNTARAM;
vnapage[3] = ExtraNTARAM + 0x400;
}
break;
case NT_SINGLE_SCREEN_TABLE_0:
vnapage[0] = vnapage[1] = vnapage[2] = vnapage[3] = &NTARAM[0x000];
@ -179,10 +182,12 @@ void ChangeMirroring(){
vnapage[0] = vnapage[1] = vnapage[2] = vnapage[3] = &NTARAM[0x400];
break;
case NT_SINGLE_SCREEN_TABLE_2:
vnapage[0] = vnapage[1] = vnapage[2] = vnapage[3] = ExtraNTARAM;
if(ExtraNTARAM)
vnapage[0] = vnapage[1] = vnapage[2] = vnapage[3] = ExtraNTARAM;
break;
case NT_SINGLE_SCREEN_TABLE_3:
vnapage[0] = vnapage[1] = vnapage[2] = vnapage[3] = ExtraNTARAM+0x400;
if(ExtraNTARAM)
vnapage[0] = vnapage[1] = vnapage[2] = vnapage[3] = ExtraNTARAM + 0x400;
break;
}
return;
@ -218,7 +223,11 @@ INLINE void DrawChr(uint8 *pbitmap,uint8 *chr,int pal){
void DrawNameTable(int scanline, int ntnum, bool invalidateCache) {
NTCache &c = cache[ntnum];
uint8 *bitmap = c.bitmap, *table = vnapage[ntnum], *tablecache = c.cache;
uint8 *bitmap = c.bitmap, *tablecache = c.cache;
uint8 *table = vnapage[ntnum];
if(table == NULL)
table = vnapage[ntnum&1];
int a, ptable=0;
uint8 *pbitmap = bitmap;